{"id":127985,"date":"2024-10-26T10:48:20","date_gmt":"2024-10-26T02:48:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/127985\/"},"modified":"2024-10-26T10:48:21","modified_gmt":"2024-10-26T02:48:21","slug":"redis-%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%a0%b9%e6%93%9a%e5%89%8d%e7%b6%b4%e5%bf%ab%e9%80%9f%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/127985\/","title":{"rendered":"Redis \u5982\u4f55\u5be6\u73fe\u6839\u64da\u524d\u7db4\u5feb\u901f\u522a\u9664\u6578\u64da"},"content":{"rendered":"<h1 id=\"redis-%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%a0%b9%e6%93%9a%e5%89%8d%e7%b6%b4%e5%bf%ab%e9%80%9f%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-BSQWlcYwGa\">Redis \u5982\u4f55\u5be6\u73fe\u6839\u64da\u524d\u7db4\u5feb\u901f\u522a\u9664\u6578\u64da<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cRedis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\u3002\u7279\u5225\u662f\u5728\u9700\u8981\u5feb\u901f\u8b80\u53d6\u548c\u5beb\u5165\u7684\u61c9\u7528\u4e2d\uff0cRedis \u7684\u6027\u80fd\u8868\u73fe\u5c24\u70ba\u7a81\u51fa\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5982\u4f55\u6709\u6548\u5730\u7ba1\u7406\u548c\u522a\u9664\u6578\u64da\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Redis \u4e2d\u6839\u64da\u524d\u7db4\u5feb\u901f\u522a\u9664\u6578\u64da\u3002<\/p>\n<h2 id=\"redis-%e7%9a%84%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b-BSQWlcYwGa\">Redis \u7684\u6578\u64da\u7d50\u69cb<\/h2>\n<p>Redis \u652f\u6301\u591a\u7a2e\u6578\u64da\u7d50\u69cb\uff0c\u5305\u62ec\u5b57\u7b26\u4e32\u3001\u54c8\u5e0c\u3001\u5217\u8868\u3001\u96c6\u5408\u548c\u6709\u5e8f\u96c6\u5408\u7b49\u3002\u9019\u4e9b\u6578\u64da\u7d50\u69cb\u4f7f\u5f97 Redis \u80fd\u5920\u9748\u6d3b\u5730\u8655\u7406\u5404\u7a2e\u6578\u64da\u985e\u578b\u3002\u5728\u9032\u884c\u6578\u64da\u522a\u9664\u6642\uff0c\u4e86\u89e3\u9019\u4e9b\u6578\u64da\u7d50\u69cb\u7684\u7279\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e9%8d%b5%e7%9a%84%e5%89%8d%e7%b6%b4%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e7%ae%a1%e7%90%86-BSQWlcYwGa\">\u4f7f\u7528\u9375\u7684\u524d\u7db4\u9032\u884c\u6578\u64da\u7ba1\u7406<\/h2>\n<p>\u5728 Redis \u4e2d\uff0c\u9375\u662f\u7528\u4f86\u552f\u4e00\u6a19\u8b58\u6578\u64da\u7684\u3002\u70ba\u4e86\u65b9\u4fbf\u7ba1\u7406\uff0c\u958b\u767c\u8005\u901a\u5e38\u6703\u4f7f\u7528\u524d\u7db4\u4f86\u7d44\u7e54\u9375\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u7528\u6236\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u300cuser:\u300d\u4f5c\u70ba\u524d\u7db4\uff0c\u5c0d\u65bc\u8a02\u55ae\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u300corder:\u300d\u4f5c\u70ba\u524d\u7db4\u3002\u9019\u6a23\u7684\u547d\u540d\u898f\u5247\u4e0d\u50c5\u6709\u52a9\u65bc\u6578\u64da\u7684\u5206\u985e\uff0c\u4e5f\u65b9\u4fbf\u4e86\u5f8c\u7e8c\u7684\u6578\u64da\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e5%bf%ab%e9%80%9f%e5%88%aa%e9%99%a4%e5%89%8d%e7%b6%b4%e6%95%b8%e6%93%9a%e7%9a%84%e6%96%b9%e6%b3%95-BSQWlcYwGa\">\u5feb\u901f\u522a\u9664\u524d\u7db4\u6578\u64da\u7684\u65b9\u6cd5<\/h2>\n<p>\u5728 Redis \u4e2d\uff0c\u522a\u9664\u6578\u64da\u7684\u57fa\u672c\u547d\u4ee4\u662f <code>DEL<\/code>\u3002\u7136\u800c\uff0c\u7576\u9700\u8981\u6839\u64da\u524d\u7db4\u522a\u9664\u5927\u91cf\u6578\u64da\u6642\uff0c\u76f4\u63a5\u4f7f\u7528 <code>DEL<\/code> \u547d\u4ee4\u6703\u975e\u5e38\u4f4e\u6548\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u7528\u7684\u65b9\u6cd5\u4f86\u5be6\u73fe\u6839\u64da\u524d\u7db4\u5feb\u901f\u522a\u9664\u6578\u64da\uff1a<\/p>\n<h3>1. \u4f7f\u7528 <code>SCAN<\/code> \u547d\u4ee4<\/h3>\n<p>Redis \u63d0\u4f9b\u4e86 <code>SCAN<\/code> \u547d\u4ee4\uff0c\u53ef\u4ee5\u7528\u4f86\u904d\u6b77\u9375\u7a7a\u9593\u3002\u9019\u500b\u547d\u4ee4\u4e0d\u6703\u4e00\u6b21\u6027\u8fd4\u56de\u6240\u6709\u9375\uff0c\u800c\u662f\u5206\u6279\u8fd4\u56de\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u963b\u585e Redis \u670d\u52d9\u5668\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 <code>SCAN<\/code> \u547d\u4ee4\u522a\u9664\u4ee5\u300cuser:\u300d\u70ba\u524d\u7db4\u7684\u9375\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code> \n# \u4f7f\u7528 SCAN \u904d\u6b77\u9375\ncursor = 0\nrepeat\n    cursor, keys = redis.call('SCAN', cursor, 'MATCH', 'user:*')\n    for _, key in ipairs(keys) do\n        redis.call('DEL', key)\n    end\nuntil cursor == 0\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-lua-%e8%85%b3%e6%9c%ac-BSQWlcYwGa\">2. \u4f7f\u7528 Lua \u8173\u672c<\/h3>\n<p>Redis \u652f\u6301 Lua \u8173\u672c\uff0c\u53ef\u4ee5\u5728\u670d\u52d9\u5668\u7aef\u57f7\u884c\u591a\u500b\u547d\u4ee4\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u7db2\u7d61\u5ef6\u9072\uff0c\u63d0\u9ad8\u6548\u7387\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 Lua \u8173\u672c\u522a\u9664\u4ee5\u300corder:\u300d\u70ba\u524d\u7db4\u7684\u9375\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nlocal cursor = '0'\nrepeat\n    local result = redis.call('SCAN', cursor, 'MATCH', 'order:*')\n    cursor = result[1]\n    for _, key in ipairs(result[2]) do\n        redis.call('DEL', key)\n    end\nuntil cursor == '0'\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8-redis-%e9%9b%86%e7%be%a4-BSQWlcYwGa\">3. \u4f7f\u7528 Redis \u96c6\u7fa4<\/h3>\n<p>\u5982\u679c\u60a8\u7684\u61c9\u7528\u4f7f\u7528 Redis \u96c6\u7fa4\uff0c\u5247\u53ef\u4ee5\u5229\u7528\u96c6\u7fa4\u7684\u5206\u7247\u7279\u6027\u4f86\u63d0\u9ad8\u522a\u9664\u6548\u7387\u3002\u901a\u904e\u5c07\u6578\u64da\u5206\u6563\u5230\u4e0d\u540c\u7684\u7bc0\u9ede\u4e0a\uff0c\u53ef\u4ee5\u4e26\u884c\u57f7\u884c\u522a\u9664\u64cd\u4f5c\uff0c\u5f9e\u800c\u52a0\u5feb\u6574\u9ad4\u901f\u5ea6\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-BSQWlcYwGa\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u4e0a\u8ff0\u65b9\u6cd5\u522a\u9664\u6578\u64da\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u522a\u9664\u64cd\u4f5c\u662f\u4e0d\u53ef\u9006\u7684\uff0c\u8acb\u5728\u57f7\u884c\u524d\u78ba\u4fdd\u4e0d\u6703\u522a\u9664\u91cd\u8981\u6578\u64da\u3002<\/li>\n<li>\u5728\u9ad8\u6d41\u91cf\u7684\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u5efa\u8b70\u5728\u4f4e\u5cf0\u671f\u57f7\u884c\u5927\u898f\u6a21\u522a\u9664\u64cd\u4f5c\uff0c\u4ee5\u907f\u514d\u5f71\u97ff\u7cfb\u7d71\u6027\u80fd\u3002<\/li>\n<li>\u4f7f\u7528 <code>SCAN<\/code> \u547d\u4ee4\u6642\uff0c\u8acb\u6ce8\u610f\u63a7\u5236\u6bcf\u6b21\u8fd4\u56de\u7684\u9375\u6578\u91cf\uff0c\u4ee5\u907f\u514d\u4e00\u6b21\u6027\u8fd4\u56de\u904e\u591a\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BSQWlcYwGa\">\u7e3d\u7d50<\/h2>\n<p>\u5728 Redis \u4e2d\u6839\u64da\u524d\u7db4\u5feb\u901f\u522a\u9664\u6578\u64da\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u901a\u904e\u4f7f\u7528 <code>SCAN<\/code> \u547d\u4ee4\u3001Lua \u8173\u672c\u4ee5\u53ca Redis \u96c6\u7fa4\u7b49\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u522a\u9664\u6578\u64da\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u63d0\u9ad8\u4e86\u64cd\u4f5c\u7684\u6548\u7387\uff0c\u4e5f\u78ba\u4fdd\u4e86\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Redis\u5982\u4f55\u901a\u904e\u9375\u524d\u7db4\u5feb\u901f\u522a\u9664\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u64cd\u4f5c\u6d41\u7a0b\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-127985","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/127985","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=127985"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/127985\/revisions"}],"predecessor-version":[{"id":127986,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/127985\/revisions\/127986"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=127985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=127985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=127985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}